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HVAC/R Evacuation Quiz March 9, 2022, 2:45 am
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Why A/C Systems Freeze
Let's start with the basics. Water freezes at 32° Fahrenheit (0° Celsius) at sea level and at atmospheric pressure. When any surface is below that temperature, and the air around it contains moisture, ice/frost will form. In some situations, ice is to be expected, such as in refrigeration evaporators and exposed portions of the refrigeration […]Read more
Static Pressure - Why Measure It?
This article was written by Neil Comparetto. Neil is one of the smartest and most thoughtful techs I know online. Thanks, Neil. Why measure static pressure? Because it's fun. I enjoy drilling holes in things. I rarely leave a house without drilling a hole in something. I also believe it’s an essential step to commissioning […]Read more
The House is the Biggest Duct
This article was inspired by a podcast episode about the house being the most underappreciated duct with Joe Medosch. You can listen to that podcast HERE. We probably think about sheet metal, flex duct, or the ever-controversial duct board when we think about ducts. It’s probably shiny and out of sight in most homes. But […]Read more